Information storage systems
a technology of information storage and storage systems, applied in information storage, fixed mounting, instruments, etc., can solve the problems of significant damage to the surface of the platter, head crash, and potential fragility of conventional hard disk drives, and achieve the effect of improving performance and greater flexibility of us
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
Problems solved by technology
Method used
Image
Examples
example 1
[0170] A particular practical example of the circular embodiment described above is now given. The usable band of magnetic material on the information storage disk 4 has an inner diameter of approximately 40 mm and an outer diameter of approximately 120 mm. The read / write heads on the corresponding head array disk are therefore arranged in spirals extending in a single revolution from an inner to an outer diameter which diameters correspond to the dimensions of the band of magnetic medium.
[0171] The length L of a single revolution spiral extending from the inside diameter to the outside diameter of a circular disk is given by the formula:
L=π(Di+DO) / 2
where
Di=er diameter
DO=er diameter
[0172] For a disk with an inner diameter of approximately 40 mm and an outer diameter of approximately 120 mm the length of each spiral track is therefore approximately 250 mm.
[0173] The size and shape of the heads and the pitch of the spirals are such as to allow a radial spacing of the heads o...
example 2
[0180] A particular example of the rectangular embodiment described above will now be given. In this example the length of the area of the magnetic medium 28 is 165 mm and the width is 25 mm.
[0181] As in Example 1 the size and shape of the heads and the pitch of the mutual offset between adjacent rows are such as to allow a lateral spacing of the heads of approximately 2.5 microns and a longitudinal spacing between the heads on adjacent rows of approximately 820 microns. This therefore allows for 10,000 heads per row and 200 rows—i.e. a theoretical 2 million heads in total.
[0182] The number of heads in each row corresponds to the number of parallel linear tracks, and there are therefore 10,000 data tracks extending the length of the data member. With a data storage density of 25 bits per linear micron as in the circular embodiment of Example 1, there are a total of 25×150×100=3.75 million bits. Thus if the maximum number of rows were employed each head would cover approx. 4000 bit...
PUM
Property | Measurement | Unit |
---|---|---|
width | aaaaa | aaaaa |
width | aaaaa | aaaaa |
width | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com